- Adequate liver function Total Serum Bilirubin <=1.5 x upper limit of normal (ULN) Transaminases (AST/ALT) <=2.5ULN (if liver metastases are present, then <=5ULN is allowed) ALP <=2.5ULN (if liver and/or bone metastases are present, then <=5ULN is allowed)